Cam mechanism



Dec. 7 17926.

v `J. J. WALSER ET AL GAM MECHANISM Original Filed June 18, 1917 2 Sheets-Sheet L ggf Dec. 7 1926.

J. J. wALsER ET AL y GAM MECHANI SM -Original Flr'ed June 18, 1917 2 Sheets-Sheet 2 forii rollers to mii: yanddistribute theink thereon preparatory to applying it tothe plates upon the form cylinder.

JiQssocia-ted withthe foregoing are other novel features of invention, many of which arek designedV to assist in rendering mostY highly eiiicient the action of the instrumentalities and mechanisms already pointedv out..-

Referring in more detail to theV illustrated embodiment one or more ink fountains are provided, and as shownthere are two such L L iountains.V 1n the mh fountain 10 isafountain roller l1, which is intermittently rotated while cooperating'with the'ductor roller, in the usual manner. Thefactuating means for `the ductor roller may Ybeofany suitable or Vadeqiutte form, and aszillustrated herein' a shaft' 12 is carried in YVsuitable,brackets 13 mounted on theV machine frame, and car red on shaft 12 is a cam 14..n*CooperatingwithV the cam ili'is'a longitudinallyereciprocating.

" raelf'barV 15,'and carried by saidY rack bar l5 Visa cam roller 16, which roller cooperates with the cam 14'. The cam roller 16. isiiized fto'theb'ar v15 in a suitablejmanner, as bya bolt v17.. The rack 'bar 15 has fiiled thereto at 13 la longitudinally 'extending guide rod '19,

` fixed upon the shaft 23 ofthe fountain inkV Y' and guiding rod 1 9 which guide rod works in.` a4 guiding aperture'iii the'brackets `or lugs V2O fixed to the machine frame.` Y

rlfhus asthe shaft 12 y Y are vertically reeiprocated (Fig. l). v '4 Rack bar 15 is provided with a series of teeth Q1, which .teeth mesh with a toothed sector 22 carried loosely upon a shaft 23. A roller 24 is mounted in the bracket 2O,l and bears against the back of ythe rod.. 15 to holdy it to its work Fixed to reciprocate with the geared sector 22 is afpawl lever 245 provided with a pawl 26.' The pawl 26l cooperates'with a lratchet lwheel 23, which ratchet Wheel is roller-H11.v f Tlius as theA rack bar 1,5 reciprocates, the pawl 26 isoscillated to and fro, thereby imparting intermittent rotary movement tothe ink fountain roller 11 when the lcn on i

ductoi roller is in contact therewith. Suit? Vable meansyfor varying the throw or travelV of the vpawl 26 are provided, but are omitted from the drawings for the sake of clearness, together with other details -oftlie associated mechanism. f Q

ln the embodied forni a second ink fountain/roller 31 also supplies ink tothe ductor roller and is preferably located in a separate ink fountain 30.k Fountain rollerr 31 is in- .'iitly rotated, like Vthe fountain roller Y ce mutable mechanism is provided for 'this purpose and if desired may be similar to that already described in connection Vwith fountain roller 11, but the showing thereof is omitted from the drawings for the sake of clearnessl UVthe respective ink drums.

rotates, rack bar V15 e the ductor roller is in enga Oement The `ductor Vroller r32 is Ycarriedinsuitable Y bearings in apair of arms 33, which arms are fixed' to a shaft 34 mounted in and eX- tending transversely Vto the framevof' the machine. `Fixed toV theshaft A434 is ana'rni 35, and pivotally connected to the`V end ofV the arm is a link 36. '.lhe other Vend of the link v36 is pivotally connected toa bell crank lever 37, whichv lever :isjpivotally mounted at 38 on the machine frame. Bell crank ler/ei' 3'? atits other end isprovided with a ca 'i roller 39,'which roller cooperates with asuitable cam mechanism, to be later described, whereby the ductor vroller isi trav-V Yele'd to and fro between thefountain rollers 11 and 31 and thetwo ink drumsto vwhich the ductorroller delivers its ink.

Meansfare providedby the invention for* 'regulating and adjusting` both the position and the travel of the ductor roller to compensatev for shrinkage inthesi'ze' of theiroller, and tocompensa'te for variationsV in size due to replacement off an Vold rollerby a new, and to regulate the .pressureor contact l of the ductor lroller with each ofthe respective fountain'rollers, and also witheach of In the embodied form of suchf'nieans, the ductor roller 32 yis mounted to have adjustment longitudinalles otal connection ofthe lin'k36with the bell Y crank lever 37is adjustable to varythe ef-k fective throw of the lever. Ais embodied,aV

slot 4:8 is'formed inthe endvof thelever 37 whereby the pivotal bearing 38 may be moved backwardly andV forwardly Ain the slot, thus increasing or'decreasing the throw y ofthe arm 33, and thereby correspondingly varying and regulating the ltravel of Vthe ductor roller 32; Adjusting meansfare alsoV provided in the link 36, Such as a turn buckle 19, whereby the length of the link 36 may beslightly varied to regulate the terminal .points of the travel of the ductor roller, and;

to effect a smooth and harmonious action of the mechanism. l

' Means are also provided by the invention, in connection with the actuating means for. the ductor roller, for regulating and Yvarying the dwell of the ductor roller, both at the yfountain ink rollers and at the ink drums'.

In accordance with certain features of the invention, such regulating means or devices are operable'or regulable independently of each other. Y Y

'ido

lau

intheJ1 embodiedjfornrof Suchjajctuating and regulating meansg there? is; fixed?v to the,

gemmes:

sli'aft112a caniv 55Shawingi aljeafinx groove-56 formed tliereiny vIn zthelfgropifegoperaties;

Y the shaft @Zie an arm'y orplate '692,J Whereon Y is 'carried -afpluralyof cooperating,A but vindependentlypositionalole cainsg p WhichlV 'Y the duct'or rol/ler 322 f-iilcruined upon thesliaft' ,is a ciaiinfl,l p' the upper portion 69 thefreol'filoeing bentiolverf the caterer-f operative edgeoffftliercamll (Figsg. 35 4e and' 5)?, whereby the parti 69lisbrought into' position-to cooperate v'wlithI'Yftle *cam roller 39. ,f Y

In the plate 60 isiforniedEafsl-ot 70, lzli'roi-ighy which*slot'V projectsA a tapLboltl, Wliichi tap-Vv v bolt sthreaded? riii-to the cani-l 6,8. spacing block` 72 encircles4 the tap-holt" 7l i and loJ cated a slot-T4A in the cainif-a-ndbetweenthe plate l60 and ythe cam 68, tepreventja'in-r iningand clamping 'olf-fthe Cairnl 64Vby lthe boit 71; T111@ @aimee regal-afecta@ dweil or the `duct'or rciller- 32 vaga-instI tipici-'ink drums,

an'dgby Vreason oftheearns 64 and? 68 beingx A the ink drum'sare regulatedias desired,A but the eXtentjof travel: ofjthe dui-:tor rollerytlie'.

Y precise positioni-ii-,gv of; the-fteriiiini1-` of its path of travel', andthe timeand-orcefo' Contact. with eacliofthe fountain rollers, and? also with each 'oil the inl; drums, is adjusted and regulated as may loe desiredJ or required/1 Vfor the most efficient and'adequate; iril'ing in any particular case or lfor 'any 'particular' x Work; f

In accordance with features of the inven-r` tionf'already y N n p A 7'? are' provided engaging-With anv ink drum the ductorv roller 32 at either' 'sidethereoif as shown in dotted lines'vvin- Fig'. l;r Both the ink drurn 76 and 'theJ inkV drum 77 Coopj .erate with the form linl'i-ng roller-S,which .forni inki'ngl rollerl supplies! ink -t'o' Jche plates upon the form cylinder l andalso to an ink v' Fixed E to ,aff i drum-19;. which, mi@ dem: i1-Edreams@ contact `with `tlie forni rol-ler 78, f Cooperate;- in'g with the/inkl dir-um 7'9J1isa ormjinking` rollerV 80, which likewise; supplies inkv7 toi the Y.

plate'shonl-orm cylinder40:;A i

' @ooperating withV the:l fori-inf roller 781 is' a,`

sinoothjinetal roller 81` running rijctionally ed-to 'assist-in' the-distribution@ thelinflron@ .ifliefformroller@.` *l The'ilnli 'drums 76',

81,in` the preferred forni, are; ally'viblated, I

Wise positively driven, Wha@ the .1011814181 is V`vlrictionall-y driven from Y forni roller 1781i 'linz the embodiedform'oi vibrating means", there fixedl on 'theslliaftfl2 an eccentric 86g the' strap 87vv thereof; beii'ig` connected tof` a trod` y8.8. The'rodSS- ispivotall'y coniiectled toan.v arnr f89,fwlii ch armisliixedft'o a Shadi? 90 j our'- chine iframe.

vi'dediwitlfr agroller-93, Wlifi'chfrolller 'runs in an annularly groovevdcolll-ar 94! formed upon the sha-61951@ ink; druni'77xf The link drumV positively rotated'frein-y t'he 0`ther-endlv 'ot rtsshafgt, as will beelfater described.- An arni nfaledinl-a bracket 91 niountedupoir thema-" 1 isfy provided with *al rol-ler 98, sailrd' 'roller Working annularly grooved collar 94,9

carriedon the shaft IO() ogtli'e lrictionally Y p lerici'. l Y Y* f sha-i999 is ageare'dr sector 104i-, with' which. meshes a gearedfsectorfl, lined toa sha-ft1063l which shaft is' journaled in a bracket lO'fcarri'ed on "cheymach-ilneA frame. Ffi-fonal shaft 1:06"y air arm 108 extends down- -Wardlly and is provided with arolle-rf'llg, v

roller Workingfin Aaiu annu-larly,groot/ed?VV collar l1@ on the shaft lll' offche ink drinn 76.v The ink drum- 7F33islikewise.positivelyV drivenfroinj the othe-rend ofizts sli-aft; as will be later 'descriloed Fro'in theshaft 106 Y an arrn 114feXte-rid's-` upwardll-y,v and carries a roller 1157 sia-id?v ro'lfler Working iinll an annuthe ink drum 79,` which ink druin, -lifleilie- By reasonof the two ountain'rollers; co- 1 operating to 'inlivthej ducto-r-rolfler;V the' d-ucior roller receives alarge andV adequate snpply of' ink,V 'zits' entire surf-,ace loeingy pr'act-i"ca-llyl covered y'Wi-'ely alayer :ofY inkl, of the requisite thicknessfand Veryevenlydistributedgf-in the l short-time that the'A diictor roller-is -;co"r1- tact-With the fountain rollers. The yduct-or.

roller bein-g completely suppliedWi-tlr inl; as described, connes in 'Contact with yboth the cooperatingyink drums-and lthe ink is transferredtliereto, and isftlien transferred'vby both the' i drm-ns` to theV first form inking roller; c i The first form inking roller,V this being the vform roller which the formsV first encounter, as they come round" from the impression, thus receives an adequate supply of evenly distributed ink; for the iirst, and also yfor the subsequent inking of the plate. As vhereinbefore described the second form inkingv roller issupplied preferably from thei'irst form inking roller.

maintaininga. constantand even v distribution of the supply of fresh ink.

The first form inking roller, carryingA fresherj-ink than the vsecond forni inking Vrroller, and making/contact with lthe plates on the; fori/n cylinder. alieadof theY second formiinking roller, prevents the lint or'dust fromthe paper being picked up by theink- .ing mechanism, as would be the case ifa comparatively dryer and more stickyforin 'roller should come in contact with the-plates immediately after they have leftthe iinpression. A very rapid and eiiicientspee'd control for the ductor roller is also effective. v

1. By reason of the du'ctor roller cooperat-- Ying with the two fountain rollers, yand being as itV were pressed or wedged therebetween, the ductor roller is*V immediatelyV brought down from the high speed atv which itk was' s inning or rotatinof after leavin'the ink Vdrums and almost at once is brought to theY slow speed of the fountain rollers, which would not be the case Vif the ductor roller madeA contact with. only one fountain roller. Furthermore, when the du'ctoi` roller, at the other end of its traVeLengages in likevmanner with thetwo ink drums it will be practically immediately brought up from the comparatively slow speed of the ink Vfountain rollers to the speed of the ink drums, which likewise'would not be the case if but a'singl'e ink .drum were used. Y

Thus there is secured a much better and more quickly acting control of the'ductor roller on a'high Yspeed press, inwhich the struction shown andk described withoutY departing from the-'principles of the invention and Without sacrificing itsv chief advantages. `What we claimv is u l. A cain'inechanisin including in' combi- Ynation a cam body,.a pivotedv mounting therefor, a high andv av low part carried thereby and each. being independently position- The vibrating 'distributing roller8i, ruiming in VContact with' the first form inkingv roller, Y assists, in providing and fthe throw off the oscillating cam,

ltwill be understood thatV able to vary the operationv .of the cram, anda cam for actuating the first mentioned Cain.` r

f 2. yA cammechanismincluding in-combination a vcam lbody, a Vpivotedmounting V therefor, a--high and av low part carried thereby and-each', being independently positionable tovary the operation ofjthe cam, and a rotarycam for actuating the first mentioned cam.

3. AV cam-mechanism including'in combi-J nation a rotating cam having-a fiXed'cam path, an oscillatinggcam operated thereby and havingv an adj ustable, cani Y path .to vary 4. A cam mechanism .including-in 'combirnation a rotating. cam having a Vfifi-ed -camr path, :an oscillating lcam operated "thereby, a member cooperating with said oscillating cam, saidA oscillating cam having an'adjustablecam path to vary the dwell ofy said oscillating. cam with respect to-said member cooperatingtherewith.,V f l 5.5A cam comprisinga pivot vbearing,'an

Vactuating arm extending in one direction from4 the-pivot, anda fiat bodyplate-Y eX- Atending in another direction from the pivot,

a second plate vhaving the low part of the cam path and mounted in variablepositionsY on the body vplate/anda third plate having the 4 high ypartof the cam path and inde-` pendently .mounted in-variableposition on ,l 'said body plate. i'

G. A'cain mechanism including inrcombinationa cylindrical rotating cam having a circular cam path, and actuated by said cai path, acam having a pivot bearing, an actuating arm extending in one direction from the pivot and cooperating withsaid cainvpath, and a flatV body plate extending in another direction from Vthe pivot,xa second plate jhavingthe ,low part of the ,cam path and mounted in variable positions on y vthe body plate and a third plate having the high part ofthe 'cam path and independently mounted in variable plate. Y

7^. A` cam comprising a cam body anda continuous cam path includinga member carrying the lhigh part of the cam and a secondinember carrying the low part of the cam, thetwo said members overlappingto forma continuous trackwaywith which Vthe elementcontrolled by the cam is incontinuous Contact, and means for variably positioning and holding both said members on the cam body Vindependently of-e'ach other to vary the action ofthe cam. i

8. A cam comprising va cam body and a continuousv caml path vincluding a member carrying the vhigh partl of the cam and a second member carrying the low part of the cam, the two said members overlapping to form a continuous trackway with which they element controlled by the cam is in conpositions on said body iio :tinuous contact, and inc lependently operable devices for `variably angularlyV positioningl and holdingboth said members on the cam Y body independently of reach .the action of thercam. y

9. A cam mechanism comprising a shaft, Aa cam body fixed thereto, avcam member of the cam.l

10. A cam mechanism comprising la shaft,

a cam bodyV iixed thereto,l acam member mounted loosely on the shaft and carrying the high part of the cam, a second cam mem-V ber mounted loosely on the shaft andcarrying the low part of the cam,the two said members overlappngto form a continuous trackway with which the element controlled by the cam is in continuous contact, and

means for variably angularly positioning `and holding both said members on ythe, cam

body independently of each other to varythe. action ofthe cam. Y Y y ll. A cam "comprising f a slotted bodyV plate, a slotted plate carrying one partV oi' the cam track, a plate carrying a lower or higher part vof the' cam track,"a clamping bolt passing through a slot in ythe body plate and threaded intothe slotted cam' track plate, and -a clamping bolt passingthrough a slot in the lcam body plate and/,in the slotted cam track" plate and threadedv into the other cam track plate. f-

12. A cam mechanism comprising a slotted body plate7 a Shaft to lwhich lthe 'cam body isv liXed, a slotted plate mounted loosely on vthe shaftvand carrying onev part 'of the cam track, a plate mounted loosely lon the Vshaft f and carrying a lower'or higher part of the cam track, a clamping'boltpassing through a slot in the body plate and threadedV intoi the slotted cam track plate, and a clamping bolt passing'through a slot in thefca-m body otherl to varyv plate and in the slotted cam tracknplate and threaded into rtheother cam track plate.

13. Acam'comprising a slotted body plate,

a slotted plate carrying one part of the cam track, plate Vcarrying a lower lory higher part of the cam track, a clamping bolt passing through a slot in the body plate and threaded into the slotted cam track plate, and a clamping bolt passing through a slot 'in 'the cam body plate and in the slotted cam l track'plate and threaded into the other cam track! plate, and a spacing block in the slot y in the slottedcam track plate.

14; A cam comprising an oscillatable cam body and a continuous cam pathy including a member carrying theV high part of they cam,

amember carrying the low part of the cam,

the two said members overlapping to form af continuous trackway with which the element controlled by the cam is in continuous .con-v tact, means .for oscillating the cam body, and

vmeans `for angularly -Variablyy positioning Vand holding bothlsaid members on the cam `body independently of eachother to vary fthe action of the cam.

r15. A cam comprising an oscillatable cam body? and a continuous cam path including a member carrying the high part of the cam and a .member carrying the low part of the cam, means Jfor langularly variably positionying and'holding bothl said members on the cam ybody independently of each other to Vary the action vof thev cam, a cooperating cam lever operated thereby, and means for soV varying the angular` relation V'of said lever Mto the cam.

, A1,6.7A cam comprisingi a cam body and a continuous cam path including a member carrying the-high part of thecam 4and a member carrying thev low part ofthe cam,

and meansV for' variablypositioning, vand v"holding both saidmember's' onfthe camA body independently of each otherto vary the ac-V tion of the cam, a Vcooperating cam lever operated thereby, and means for varying the angular relation of said lever to the cam.

In testimony whereof, vwe-have signed our Y names to this speciication;

JosEPn .rwALsnR. HARLAND rANKBoNnR. 

